IC manufacturers STMicroelectronics

IC manufacturers (103)

STMicroelectronics L99BM114 | Demoboard STEVAL-BMS114TX

Overview

TopologyBattery Management System
IC revision1.0

Description

The STEVAL-BMS114TX is a battery management system (BMS) evaluation board that manages from 4 to 14 battery cells.The main advantage of this evaluation board is ensuring isolated connection to an external MCU, thanks to the embedded transceiver.The board is based on the L99BM114 Li-ion battery monitoring and protection chip for high-reliability applications and the L99BM1T general-purpose SPI to isolated SPI bidirectional transceiver.The main activity of the L99BM114 is monitoring the cells and battery node status through stack voltage measurement, cell voltage measurement, temperature measurement, and coulomb counting.Measurement and diagnostic tasks can be executed either on demand or periodically, with a programmable cycle interval.Measurement data are available for an external microcontroller to perform charge balancing and to compute the state of charge (SOC) and the state of health (SOH).The L99BM1T general-purpose SPI to isolated SPI bidirectional transceiver can transfer communication data incoming from a classical 4-wire based SPI interface to a 2-wire isolated interface (and vice versa). In our board, the transceiver is configured as a slave.The STEVAL-BMS114TX provides an elaborate monitoring network to sense the voltage of each cell. It is possible to sense the current of the entire battery pack.Passive cell balancing can be performed either via the L99BM114 internal MOSFETs or via external MOSFETs. The controller can either manually control the balancing drivers or start a balancing task with a fixed duration. In the second case, the balancing may be programmed to continue even when the IC enters a low-power mode called silent balancing, to avoid unnecessary current absorption from the battery pack. The balancing function is necessary to lengthen the battery capacity and its duration.

Features

Hosts the L99BM114 multicell battery monitoring and balancing ICHosts the L99BM1T general purpose SPI to isolated SPI bidirectional transceiverVoltage monitoring of every single cell and of the entire battery nodeCurrent sensing of the entire battery node5 GPIOs to connect temperature sensors as NTCsCN1 connector that allows establishing communication with an MCU board via SPICN2 connector that interfaces directly to an MCU board for control and diagnostic functionsPassive balancingCompact size: 100 mm x 76 mm

Typical applications

  • Energy generation and distribution

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
Pitch
(mm)
MountIR
(A)
Working Voltage
(V (AC))
PCB/Cable/PanelContact Resistance
(mΩ)
Tol. RL
(mm)
Stranded Wire Section (AWG)Stranded Wire Section (Metric)Qty.
(pcs)
CTol. CVR
(V (DC))
SizeOperating TemperatureQ
(%)
DF
(%)
RISOCeramic TypeW
(mm)
Fl
(mm)
PackageInputVCE max.
(V)
IF max.
(mA)
Test Condition CTRCTR min.
(%)
CTR max.
(%)
VISO
(V (RMS))
SW
(mm)
TiFlammability RatingApplicationInterface TypePins
(pcs)
RowsH
(mm)
GenderTypeIR
(A)
PackagingColor Samples
150080BS75000SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 470 Blue 465 145 3.2 InGaN 140 SMT 2 4000 0805 -40 °C up to +85 °C 1.25 0.7 Tape and Reel
150080GS75000SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 525 Green 515 450 3.2 InGaN 140 SMT 2 4000 0805 -40 °C up to +85 °C 1.25 0.7 Tape and Reel
150080YS75000SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 590 Yellow 595 120 2 AlInGaP 140 SMT 2 4000 0805 -40 °C up to +85 °C 1.25 0.7 Tape and Reel
150080AS75000SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 605 Amber 610 130 2 AlInGaP 140 SMT 4000 0805 -40 °C up to +85 °C Tape and Reel
150080RS75000SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 625 Red 630 150 2 AlInGaP 140 SMT 2 4000 0805 -40 °C up to +85 °C 1.25 0.7 Tape and Reel
885012006053SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 400022 pF ±5% 50 0603 -55 °C up to +125 °C 84010 GΩ NP0 Class I 0.8 0.4 0.8 7" Tape & Reel
885012006054SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 400033 pF ±5% 50 0603 -55 °C up to +125 °C 100010 GΩ NP0 Class I 0.8 0.4 0.8 7" Tape & Reel
885012206085SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 40002.2 nF ±10% 50 0603 -55 °C up to +125 °C 2.510 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206087SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 40004.7 nF ±10% 50 0603 -55 °C up to +125 °C 2.510 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206088SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 40006.8 nF ±10% 50 0603 -55 °C up to +125 °C 2.510 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206089SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 400010 nF ±10% 50 0603 -55 °C up to +125 °C 2.510 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206093SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 400047 nF ±10% 50 0603 -55 °C up to +125 °C 310 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206094SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 400068 nF ±10% 50 0603 -55 °C up to +125 °C 37.4 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206095SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6 4000100 nF ±10% 50 0603 -55 °C up to +125 °C 35 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012207079SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC) 2 30002.2 µF ±10% 25 0805 -55 °C up to +125 °C 100.05 GΩ X7R Class II 1.25 0.5 1.25 7" Tape & Reel
885012207103SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 2 30001 µF ±10% 50 0805 -55 °C up to +125 °C 100.1 GΩ X7R Class II 1.25 0.5 1.25 7" Tape & Reel
885012208094SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 3.2 20004.7 µF ±10% 50 1206 -55 °C up to +125 °C 100.02 GΩ X7R Class II 1.6 0.5 1.6 7" Tape & Reel
61900411121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.54 mm Male Locking Header 2.54 THT 250 PCB 20 max. 10.16 -40 °C up to +105 °C1000 MΩ 4 Male Vertical 3 Bag
61900611121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.54 mm Male Locking Header 2.54 THT 250 PCB 20 max. 15.24 -40 °C up to +105 °C1000 MΩ 6 Male Vertical 3 Bag
61900411621SPEC
4 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.54 mm Female Terminal Housing 2.54 Cable 10.8 -40 °C up to +105 °C1000 MΩ 4 Female Terminal Housing Bag Beige
61900611621SPEC
4 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.54 mm Female Terminal Housing 2.54 Cable 15.7 -40 °C up to +105 °C1000 MΩ 6 Female Terminal Housing Bag Beige
624030213322SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.00 mm Female Dual Row Terminal Housing w. positive locking 2 Cable 33.4 -25 °C up to +85 °C1000 MΩ 30 Female Terminal Housing Bag
62403021722SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.00 mm Male Dual Row Horizontal Shrouded Header w. positive locking 2 THT 3 250 PCB 20 max. 33.4 -25 °C up to +85 °C1000 MΩ 30 Male Horizontal 3 Tube White
970080365SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WA-SPAII Plastic Spacer Stud, metric, internal/ internal 8 -30 °C up to +110 °C 6 M3 UL94 HB Bag Black
62400113722SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.00 mm Female Dual Row Crimp Contact 2 3 250 Cable 20 max. 28 to 22 (AWG) 0.081 to 0.326 (mm²) 10000 -25 °C up to +85 °C Female Crimp Terminal 3 Big Reel
61910113722SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-WTB 2.54 mm Female Crimp Contact 2.54 3 250 Cable 20 max. 28 to 22 (AWG) 0.081 to 0.326 (mm²) 1000 -40 °C up to +105 °C Female Crimp Terminal 3 Small Reel
60900213421SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point 2.54 250 20 max. 2.44 -40 °C up to +125 °C1000 MΩ 1 Jumper 3 Bag Black
61300211121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Pin Header 2.54 THT 250 20 max. 5.08 -40 °C up to +105 °C1000 MΩ 2 Single Pin Header Straight 3 Bag
61300311121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Pin Header 2.54 THT 250 20 max. 7.62 -40 °C up to +105 °C1000 MΩ 3 Single Pin Header Straight 3 Bag
61400416021SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-COM USB 2.0 Type A Horizontal THT 1.5 30 20 max. -40 °C up to +105 °C1000 MΩ USB 2.0 Type A 4 Receptacle Horizontal 1.5 Tray White
885012206102SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 100 V(DC) 1.6 4000100 pF ±10% 100 0603 -55 °C up to +125 °C 2.510 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012206120SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 100 V(DC) 1.6100 nF ±10% 100 0603 -55 °C up to +125 °C 51 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
885012209073SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 3.210 µF ±10% 50 1210 -55 °C up to +125 °C 100.01 GΩ X7R Class II 2.5 0.6 2.5 7" Tape & Reel
885012209071SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 100 V(DC) 3.22.2 µF ±10% 100 1210 -55 °C up to +125 °C 50.05 GΩ X7R Class II 2.5 0.75 2.5 7" Tape & Reel
97790603211SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WA-SCRW Pan Head Screw w. cross slot M3 6 2000 -30 °C up to +85 °C UL94 V-0 Bulk Natural
885012206125SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC) 1.6220 nF ±5% 50 0603 -55 °C up to +125 °C 102.3 GΩ X7R Class II 0.8 0.4 0.8 7" Tape & Reel
140357145300SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WL-OCPT SOP-4 1.24 SMT 4.4 SOP4 -55 °C up to +110 °C 3.6 SOP 4 DC 35 60 IF = 5 mA
VCE = 5 V
200 400 3750 2 Optocoupler Phototransistor
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
Pitch
(mm)
MountIR
(A)
Working Voltage
(V (AC))
PCB/Cable/PanelContact Resistance
(mΩ)
Tol. RL
(mm)
Stranded Wire Section (AWG)Stranded Wire Section (Metric)Qty.
(pcs)
CTol. CVR
(V (DC))
SizeOperating TemperatureQ
(%)
DF
(%)
RISOCeramic TypeW
(mm)
Fl
(mm)
PackageInputVCE max.
(V)
IF max.
(mA)
Test Condition CTRCTR min.
(%)
CTR max.
(%)
VISO
(V (RMS))
SW
(mm)
TiFlammability RatingApplicationInterface TypePins
(pcs)
RowsH
(mm)
GenderTypeIR
(A)
PackagingColor Samples